Riot lock



Jan. 4, 1938. w. HASENFUSS 2,104,618

' RIOT LOCK Filed April 1, 1936 Patented Jan. 4, 1938 UNITED STATES PATENT-,OFF'ECE William Hasenfuss, Amsterdam, N. Y.

Application April 1, 1936, Serial No. 72,195

3 Claims.

This invention relates to a riot look.

It is primarily aimed to provide a novel means capable of use as an attachment to practically any door lock which is operable to expeditiously retract the bolt of the lock from the inside, without interfering with the key operation of the look from the outside.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawing illustrating an operative embodiment.

In said drawing:-

Figure 1 is a view in front elevation showing 15 my improvements applied to a door and its frame;

Figure 2 is a horizontal sectional view taken on the line 2-2 of Figure 1;

Figure 3 is an enlarged horizontal section through portions of the door and its frame and 20 parts of the lock; 7

Figure 4 is a detailed sectional view taken on the line 44 of Figure 2;

Figure 5 is a detailed section taken on the line 55 of Figure 2;

25 Figure 6 is a detailed section taken on the line 66 of Figure 2; and

Figure 7 is a horizontal sectional view through a portion of a modified form of the invention.

Referring specifically to the drawing, the in- 30 vention has been shown in connection with a conventional door or closure Ill hinged as at H to a frame l2. Such door is equipped with .a conventional lock I3, for instance of the permutation or tumbler type having a latch bolt M which 35 in locked position engages a keeper l5 on a part of the said frame l2. As usual, the bolt I4 is adapted to slide or be thrown into and out of the keeper to lock or unlock the door. It is however of a construction permitting it to be pulled to open position from the inner side of the door.

In accordance with the present invention, an elongated bar or lever is provided at l6, being for instance channel-shaped in cross section as shown and pivoted at IT at one end thereof, to a bracket I8 fastened to the door [0.

The opposite end of said lever I6 is disposed within a housing I9 fastened to the door as at 20, at one end of the lock 13. Such lever may.

50 rest on an upstanding flange 2! of said housing. The housing has inwardly extending ears at 22 to which a pintle 23 is fastened and on which a roller 24 is journaled. A flexible draw element 25 passes over the roller 24 and is connected at 55 one end to the lever l6 and at its other end to a lip or other part 21 on the bolt l4. Such draw element 25 may be a metallic chain as shown.

A casing or shield 28 may be disposed over the lock l4 particularly to cover the chain 25, such shield being fastened to the door as at 29. 5

Notwithstanding the attachment of my improvements to the lock, the bolt I4 may still move relatively to the lever 1.6 so as to permit the normal operation of the bolt from the exterior of the door. However in case of a riot, the lever I6 may be pushed toward the door to thereby draw on the chain 25 and in turn retract the bolt M.

The lever I6 is urged away from the door by an expansive leaf spring device 30, fastened to the door as at 3| and bearing against the lever. The free end of the lever abuts the outer wall of the casing l9 to limit its movement. The tension of the spring 30 may be regulated by varying its position along the lever.

Various changes may be resorted to provided they fall within the spirit and scope of the invention. For instance the modified form shown in Figure 7 may be employed. In such form, the casing i9 may supplant that at l9 having a lever 32 pivoted on a vertical pintle 33 therein. The chain 25', equivalent of that at 25 is fastened to the lever 32. The lever 32 has an arm 34 equipped with a roller 35 which is disposed within the channel of the lever IS, the equivalent of that at l6. Hence as the lever 16' is pushed toward the door adjacent the lock, it will move the roller 35, arm 34 and lever 32 retracting a chain 25; otherwise the structiire is identical with the first form.

I claim as my invention:

1. In combination with a closure having a lock on one face thereof provided with a shield and .a retractile bolt, an exposed elongated lever means pivoted to the said face of the closure, a flexible connection means between the lever and the bolt substantially in line with both of them and extending into the shield through the rear end and connected to the bolt, a casing in line with said lock secured to said face into which the free end of the lever means extends and is held against outward displacement, means urging the lever means outwardly at its free end into contact with the casing, said bolt being slidable in a path substantially in line with the lever means, and a roller within the casing contacted by one of said means.

2. In combination with a closure having a lock on one face thereof provided with a shield and a retractile bolt, an exposed elongated lever pivoted to the said face of the closure, a flexible connectlon between the lever and the bolt substantially in line with both of them and extending into the shield through the rear end and connected to the bolt, a casing in line with said lock secured to said face into which the free end of the lever extends and is held against outward displacement, means urging the lever outwardly at its free end into contact with the casing, said bolt being slidable in a path substantially in line with the lever, and a roller within the casing over which the flexible connection is trained.

3. In combination with a closure having a lock provided with a shield and a retractile bolt, a lever with both of them and extending into the shield through one end and connected to the bolt, said flexible connection including a two-armed lever, a easing into which the free end of the lever extends and is held against outward displacement, means urging the lever outwardly at its free end into contact with the casing, said bolt being slidable in a path substantially in line with the lever, a, second lever, said second lever being pivoted within said casing and having an arm to which the flexible connection is secured, and said second lever having means thereon engaging the free end of the first mentioned lever.

WILLIAM HASENFUSS. 

